weakly · adjective1
- Proto-Germanic · inherited from*waikalīkaz“weakly; weak”
- Old English · inherited fromwāclīċe“weakly”
- English todayweakly
From Old English wāclīċe (“weakly”), equivalent to weak + -ly (adjectival suffix); compare Old English wāclīċ (“weak; ignoble; mean”), and Old Norse veikligr (“weakly; sick”); both ultimately from Proto-Germanic *waikalīkaz (“weakly; weak”).
weakly · adverb2
- Proto-Germanic · inherited from*waikalīkō
- Middle English · inherited fromweykly
- English todayweakly
From Middle English weykly, equivalent to weak + -ly (adverbial suffix). Compare Old High German weihlīcho (“weakly”), Middle English wocliche, wokli, wacliche (both from Proto-Germanic *waikalīkō).
Etymology from Wiktionary, CC BY-SA 4.0.